Car-brake mechanism.



' s. B. THOMPSON.

GAR BRAKE MECHANISM.

APPLICATION FILED APB. 5.1909.

935,176. Patgnted Sept 28,1909.

WITNESSES 5%,, INVENTOI? 5%. 324/ By I a l ATTORNEYS PATENT OFFICE.

UNITED: STATES SAMUEL is. mnomrson, E 'rnnwoon, NE aERsEr. j

v cAB-iamxE fincm sm' To all whom it may concern: i

Be it known thatl, SAMUEL--13. THOMP- ox. a citizenof the United states, and resi dent of .Fann'ood, Union cotmty, State of \'e\\- Jersey, have made certain new and useful Inventions- Relating to- Car-Brake Mechanism, "of which the followin is a. specification, taken in connection with" the accompanying drawing, orming part of-the.

same.

This invention relates to car brake mech-' anism and relates especially to brake mechanism for electric or other .miln'ay cars in. which the adjustable brake link coinp rises Y an adjusting.lmrharing anlend encirclin one. of the brake levers and a cooperatin strap similarly encircling-the other brake 'le \fer atone-end, said strap andadjnsting' bar Being rigidly 'secured inadjusted p0si-- tion as by a' clamping bolt and adjusting pin engaging suitable apertllres in said me'm-x hers and holding. tl em -rigid. iii, connection.

if desired with 'a snitahlea liner', so that the brake link has a 'wide rau'ge of adjustment .to'compensate.for wcaraud is rigidly held in :uljusted-position under \yorklng conditions.

- I In theaccompanying.drawing shon'ing in:

a somewhat diagrammaticmanner an illus-.

t'i-a't'ive embodiment of this invention and in which the same reference. numeral refersto,

similar partsin the sereral fignra, Figure 1 is a side vie-n" showing the brake mechanism. F ig. -2 is an enlarged-side view of the adjustable brake link. Fig. is a transverse section thereof along the lines 3-3 of F 2; F igz' at is a separate side yiew-of the strap. F 1g. 1s a similar View of the ad ustm bar.

may lie mounted-0n thelianger 33 pivotally mounted on the truck frameor in any desired waynto co'operate'wlth the treadl ofthe car ivheel', the shoe 16 being indicated as similarly mounted on' the hanger 34 so as to cooperate with the tread wheel .2. The

brake mechanism comprises the brake levers 4f. 5 which may be connected to any desired part of the bra e device operating the-brake shocs, as"for instance; by pivotally connecting said levers to the brake shoes theim fi 'l'v'esj as indicated; Thebrakelever 4 may have its pivot. O-mouuted in any one of the holes. in the fulcrum plate 3 on. the truck frame and may be connected by the lever iiioei l nu lpivot T to one member jof-th 'adju sta'bli'e" brake link below the other member of which may be similarly connected by the pivot'l-l" to the brake lever actuatedixi-fit desired way, as byjthe pnll'rod 6'. .11 The adjustable brakelink. as i d-icaredz' comprises the adjusting bar li ayhiclifinay be formed of a heavy stri'pofmetal doubled back upon itself so as to fornrthesuitable;

leyer -socket. 37 to .ace'omnxedatdthe brake 6 leyei' 5- and hold the same" inf'hlinementf 'The cooperating member of the brake link 5 mayconsistof a suitablefstra such as-9,i formed ofmetalrstrip and bent to form zr ';i.milar leyer socket accommodating the'71 brakelever 4, the free ends of thisstrap; preferably iucl'osingtheend of-tl1e'-lidjust-'- iug bar, as is indicated in Fig; 3; These two link members may beheld in udjuStedpOsi tion by .anydesired means, as for-instance, the clamping bolt 10- and the a'djtist-ing-pin- 13 which rigidly hold .these-membersin' adjusted osition as fellasclamping-thereof va suitalile aliner 11 of' angle'iio'n cs indi cated'in Fig. 3,'which: maybe employed if: jdesired to further stifl'en -and 'aline" the lm-mbers-of this adjustable brake-link. For i this "purpose the strap may-15 'formed with- ,a series Jot] widely. spaced .clamping'holes 8: 19 toacmnnmodate the clampin bolt IO-imd -SE with a plurality (if-"sets ofisiimhn ly' spaced adjusting holes 12, 20 21,- 22, to accommodate the adjusting pin. "The adjnsting bar may .if desired be provided with {asrntable' aperture in the "form of the clampingslot 2- to accommodate thetclampin ibolt "and with a plurality ofclosely-spaced hdjusting aperturesQa' 26 fort-he p n". Byihaving any desired number ofj'rows of these adjusting aperturesarran ed in staggeredposition and a correspon ng nnmberof cooperating adjusting holes tlie-desired'finenes's of-adjustment may be secnredwhile maintaining .the alinementof the 'l'ink nember'sl For- .instancgn'hen the pin is in the correspond- 1 .ing lower adjusting' hole 22 one of the "ad-- justing apertures 26 may be used-for inter-1 mediate adjustments while maintaining the alincmcnt of the brake link membcrs.- al-,' though of course this is not necessary iu'a-ll cases. In Figs. 1 and i l lac-.lutahc link'is shown in retracted positiouithe adjusting be" and coiipcratiug strapoycrlappiug in the greatest extent. the adjusting" pin mag adjusting a perture 95. As wear takes place and it becomes necessary to correspondingly adjust the length of the brake link it. is only necessary to remove the adjusting pin 13, loosen the elamping'bolt and after extending the link members to the desired extent insert the adjusting pin 13 in the hole 21 and the next adjusting aperture 25 for example, if so much extension is desired. During this adjustment the clamping bolt slides a-corresponding distance in the clamping slot 24 and is tightened to clamp the parts together after the. adjusting pin has been tightened. Similar adjustments of the brake link may take place, the pin engaging in one-of the series of adjusting apertures in the adjusting bar until the inner aperture has be 11 reached. Thereupon it becomes necess: y to use the clamping pin in connection with another series of adjusting holes in the strap, of which of course any desired number may be employed While the clamping bolt is similarly transferred to another clamping hole. For example, the adjusting pin may be withdrawn from the adjusting hole 22 and. inserted 'in .the adjusting hole 20 and thereupon it can engage one of the inner adjusting apertures 26 and allow further, step-by-step adjustments to be similarly made, the clamping bolt being at the same time transferred from the clamping hole 8 to the clamping hole 19 in which position the cotiperating link members may be rigidly held together so as to assure the 1 reliable and proper operatlon ot the brake mechanism. even after extreme wearha taken place on tluycar wheels. so that the treads arc as indirated by the dotted lines 31,

It is of course desirable to employ suitable locking devices in connection with the adjusting pin and clamping bolt, the latter as indicated in Fig. 3 being provided with a suitable washer 27 and nut 28 which in connection with lthe' bolt head allows the parts to be tightly clamped together in which position they may be securely held by the split pin fastener 29 or other suitable locking device which may also be employed on the adjusting pin and lever pivots T, 14. These lever pivots pass through the pivot holes 18 and 23 in theends ot' the adjustable link so as to form a bearing; for the ends of the brake levers which are in loosejlate-ral 011- gagement with the lever sockets 37 sons to maintain alinement of the parts. By employing a suitable aliner. such. as 11, the parts are more rigidly held in position and lateral bending of the link correspondingly minimized. Furthermore. in,su eh case either the clamping bolt or adjusting pin is sufficient to maintain the link members suf ficiently in position so as to prevent either member dropping out of line into engagement with the roadbed.

Having described this invention in connection with an i lustrative ellllltitllllltillt thereof, to the details of which disclosm'e the invention is not of course to be limited, what is claimed as new and what is dcsirral to be secured by Letters Patent is set forth in the appended claims.

1. In car brake mechanism. brake levers, brake devices comprising brake. shoes connected to said brake levers, one of which said brake levers being connected to a fulcrum plate, brake operating mechanism to actuate the other of said levers, an adjustable brake link pivotally connecting the lower ends of said brake levers, said brake link comprising an adj usting bar formed of doubled metal strip to form a lever socket accommodating, laterally engaging and alining the connected brake lever said adjusting bar being formed with a longitudinal clamping slot and with a plurality of rows of staggered adjustingapertures, a strap formedot dcubled strip metal to provide a similar lever socket and toinclose said adjusting bar. said strap being formed with a plurality of spaced clampingholes and with a plurality of sets of spzu'ed'iitljust ng holes corresponding with said. adjusting apertures in said bar, an L-sectioned aliner engaging and alining said strap and bar, a clamping bolt engaging one of said clamping holes and said clamping slot and an adjusting pin engaging one of said adjusting holes and adjusting irovide a lever socket accommodatin lat-- orally engaging and alining the connected brake lever, saldadjustlng bar being formed with a clamping slot and witha plurality of rows. of staggered adjusting apertures, a strap formed of doubled strip metal to pro- 'vide asimilar-lever socket and 'to inclose said adjusting bar, said strap being formed with a plurality of spaced clamping holes and with a plurality of sets of spaced adjusting holes corresponding with said adjusting apertures in said bar, an aliner engaging and alining said strap and bar, a clamping boltengaging one, of said clamping holes and said clamping slot and an adjusting pin engaging one of said adjusting holes and adjusting apertures to allow the .-.;tep-by-step longitudinal adjustment of said brake link audliold the members thereof in adjusted positiom iso 3. In car brake mechanism, brake levers and connected brake devices operated thereby and an adjustable brake link connected to said brake levers, said brake link comprising an adjusting bar formed with a longitudinal clamping slot and with a plurality of adjusting apertures, a cooperating strap engag ng said adjusting bar and formed with a plurality of spaced clamping holes and with a plurality of adjusting holes cooperating with said adjusting apertures in said bar,- a clamping bolt engaging one of said clamping holes and said clamping slot and an adjusting pm engaging one of said adjusting holes and adjusting apertures, to allow the step-by-step longitudina adjustment of said brake link and hold the members thereof in adjusted position.

4. In car brake mechanism, an adjustable brake link comprising an adjusting bar formed of doubled metal strip to constitute an int-losing lever socket, said adjusting bar being formed with a longitudinal clamping slot and with a plurality of rows of staggered adjusting apertures, a strap formed of doubled strip metal to provide a similar lever socket and to inclose the end of said ad justing bar, said strap being formed'with a plurality of spaced clamping holes and with a plurality of sets of spaced adjusting holes corresponding with said adjusting apertures in said bar, an L-sectioned aliner engaging and alining said strap and bar, a clamping bolt engaging one of said clamping holes and said clamping slot, an adjusting pin engaging one of said adjusting holes and adjustingapertures to allow the step-by-step longitudinal adjustment of said brake link and rieidly hold the members thereof in adjusted position.

In car brake mechanism, an adjustable brake link 'comprising an adjusting bar formed with an inclosing lever socket adjacent one end and with a longitudinal clamping slot and a plurality of rows of staggered adjusting apertures, a cooperating strap formed of doubled strip metal to provide a lever socket adjacent one end, said strap being formed with a plurality of spaced clamping holes and with a plurality of sets of similarly spaced adjusting holes correspomling with said adjusting apertures I in said ha r; a clampin; bolt engaging one of said clamping holes and said clan'iping slot. and an ad usting pin engaging one of said adjusting holes and ad usting apertures to allow the step-by-step lom itudinal adjustment of said brake link and hold the members thereof in adjusted position.

6. In car brake mechanism. an adjustable brake link comprising an adjusting bar formed with an enlarged clamping aperture and with a plurality of adjusting apertures, a cooperating link member formed with a plurality of spaced clampin holes and with a plurality of similarly spaced adjusting holes corresponding with said adjusting apertures in said bar, a clamping bolt engaging one of said clamping holes and said clamping aperture and an adjusting pin engaging one of said adjustingholes and adjusting apertures to allow the step-by-step 'lolwitudn'ial adjustment of said brake link and hold, the members thereof in adjusted position. a

7. In car brake mechanism, an adjustable brake link comprising an adjusting bar formed with an enlarged clamping aperture and with a plurality of closely spaced adjusting apertures, a coiipe 'ating link member formed with a pluralitv of widely spaced clamping holes and with a plurality of similarly spaced adjusting holes cooperating with said adjusting apertures in said bar. alining means to laterally aline said link members, a clamping bolt engaging one of said clamping holes and said clamping a perture and an adjusting pin eng agi11; one of said adjusting holes and adjusting apertures to allow the step-by-step longitudinal adjustment of said brake link.

8. In car brake mechanism, an adjustable brake link comprising an adjusting bar formed with a lever socket at one end and with an enlarged clamping aperture and with a plurality of closely spaced adjusting apertures, a strap formed of doubled strip metal toprovide a lever socket adjacent one end and to iuclose the end of said adjusting bar. said strap being formed with a plurality of widely spaced clamping holes'and with a plurality of similarly spaced adjusting holes cooperating with said adjusting apertures in said bar. a clamping bolt engaging one of said clamping holes and saidclamping aperture and an adjusting pin engaging one of said adjusting holes and adjusting apertures to allow the step-by-step longitudinal adjustment of said brake link.

SAMI'EL B. THOMPSUX.

\Vitnesses HARRY L. Dvxcax,

JESSIE ll. KAY. 

